a really old game where you had to gather blood from animals to continue, using various weapons, one being a hunting rifle, a chain-gun and a grenade launcher. Either a title screen or something else shows a deer with 3d glasses on its head. and the animals you kill are deer's, rabbits, and bears, cannot remember getting past the bear, so dont know if there are more animals. it had destructible levels to a point, if your weapon was powerful enough, so a grenade launcher could make a hole in the ground. there was also a timer, so you had to get the blood as fast as possible.
i remember playing it on my grandfathers windows 95 machine.. and i think it was DOS based, but not really sure about the DOS part. graphics are very old school.
i do however remember having found it once, and had it playable on a windows 7 machine, so it is possible to find it still.